Add colors to man pages.

zshrc

@@ -3871,6 +3871,12 @@ export PYENV_ROOT="$HOME/.pyenv"
 [[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"
 eval "$(pyenv init -)"
 
+# Use colors in man pages
+# This used to work effortlessly just a few months ago,
+# I don't know what actually changed, and I have to admit that this
+# looks a bit like a dirty hack workaround.
+export GROFF_NO_SGR=1
+
 ## END OF FILE #################################################################
 # vim:filetype=zsh foldmethod=marker autoindent expandtab shiftwidth=4
 # Local variables: